Function multiUserAuthorized

src/httprpc.cpp:97–126

This function checks username and password against -rpcauth entries from config file.

//This function checks username and password against -rpcauth
//entries from config file.
static bool multiUserAuthorized(std::string strUserPass)
{
    if (strUserPass.find(':') == std::string::npos) {
        return false;
    }
    std::string strUser = strUserPass.substr(0, strUserPass.find(':'));
    std::string strPass = strUserPass.substr(strUserPass.find(':') + 1);

    for (const auto& vFields : g_rpcauth) {
        std::string strName = vFields[0];
        if (!TimingResistantEqual(strName, strUser)) {
            continue;
        }

        std::string strSalt = vFields[1];
        std::string strHash = vFields[2];

        static const unsigned int KEY_SIZE = 32;
        unsigned char out[KEY_SIZE];

        CHMAC_SHA256(reinterpret_cast<const unsigned char*>(strSalt.data()), strSalt.size()).Write(reinterpret_cast<const unsigned char*>(strPass.data()), strPass.size()).Finalize(out);
        std::vector<unsigned char> hexvec(out, out+KEY_SIZE);
        std::string strHashFromPass = HexStr(hexvec);

        if (TimingResistantEqual(strHashFromPass, strHash)) {
            return true;
        }
    }
    return false;
}

static bool RPCAuthorized(const std::string& strAuth, std::string& strAuthUsernameOut)
{